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Shutters: Difference between revisions
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A shutter is a rotating device with a single blade or multiple blades used to interrupt the light source as film is pulled through the gate. The shutter "blanks" the light from the [[lamphouse]] as the [[intermittent]] pull down motion happens. Shutters also prevent the heat of the lamp from hitting the film plane continuously. | |||
*If the shutter isn't timed properly you will see a travel ghost or [[ghosting]] on screen. This happens because the shutter isn't completely blanking out the light onto the film plane as the pull down motion of the intermittent occurs. | |||
A shutter is a rotating device with a single blade or multiple blades used to interrupt the light source as film is pulled through the gate. | |||
===Types of Shutters=== | ===Types of Shutters=== | ||
'' | (''some examples of projectors who use them'') | ||
The type of shutter used depends on the type of projector, the pull down speed of intermittent mechanism, the desired light efficiency, among other variables. | |||
* single blade ([[Kinoton]], [[Ernemann]]) | * single blade ([[Kinoton]], [[Ernemann]]) | ||
* dual blade ([[Simplex XL]]) | * dual blade ([[Simplex XL]]) | ||